That is a wild Green Discus you have in the photo above. It looks like all your discus are wild caught. It was definitely caught way up river from Manaus. Maybe from some where near Leticia. Greens are only found in the the Western upper tributaries of the Amazon. It is a very nice red spotted green. Green discus always have red spotted anal fins or broken dashes rather than continuous striations like the fish below.. Not all greens are blessed with so many spots on their bodies as yours. The more red spots on a Green the higher price they command in the export market. That fish could sell for an easy $100 here or more. I'll take eight of those. Do you accept Visa?
I prefer wild discus. I have ten Heckels and am looking for more Blues.
Your first discus photo looks like something caught closer to town. It's a Blue/Brown. How much Blue it has once full grown will determine which. It is a descriptive rather than a scientific difference. Here is a fish of mine that I consider an average Blue but they can be completely covered with blue striations.
Those that are fully striated are often sold as Royal Blues. Just a few per thousand are completely striated and they are expensive, if you can find them here.
Just feed them as much live food as you can get. That really helps them recover fast from all the stresses they have been through since being caught. Do try to make a couple of large water changes each week. I try to change 75% of my water 2 times a week with my discus.
Here is a photo of an Green Discus of average color. I paid $50 for them. I sold them since I took the photo.
Here is one of my Heckels Discus. These mostly come from tributaries of the Rio Negro.